US5299927A - Vacuum press for continuous production of plastic extruded masses - Google Patents
Vacuum press for continuous production of plastic extruded masses Download PDFInfo
- Publication number
- US5299927A US5299927A US07/851,483 US85148392A US5299927A US 5299927 A US5299927 A US 5299927A US 85148392 A US85148392 A US 85148392A US 5299927 A US5299927 A US 5299927A
- Authority
- US
- United States
- Prior art keywords
- press
- vacuum chamber
- housing elements
- housing
- vacuum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
- B28B3/22—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded by screw or worm
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/38—Treating surfaces of moulds, cores, or mandrels to prevent sticking
- B28B7/386—Cleaning
Definitions
- the invention relates to an improved vacuum press for continuous production of plastic extruded masses.
- the area of application of the invention is, in particular, the ceramics industry.
- Known vacuum presses generally consist of a preliminary press or an upper press or mixer and a lower press, and a vacuum chamber which is interposed for the purpose of vacuuming the plastic mass being processed.
- a vacuum press is also known, wherein the screw presses can be removed from the press cylinders. This procedure admittedly provides good access to the parts which are in contact with the mass, but quite a high degree of structural and manufacturing expertise is required.
- a purpose of the invention is to provide means for fast, extensive cleaning of vacuum presses.
- Another purpose of the invention is to permit effective cleaning of the parts of the press which come into contact with the mass, by permitting optimum accessibility to those parts.
- a vacuum press having housing elements that are detachable from the press to facilitate cleaning of the press.
- a vacuum press of the invention comprising a preliminary press, a vacuum chamber, and a lower press has the following features and combinations thereof:
- a preliminary press housing a lower press housing; detachable housing elements forming a part of said preliminary press housing and said lower press housing;
- a sieve plate holder connected to said detachable housing elements; said sieve plate holder being arranged to be pivotally movable with respect to said press housing;
- a vacuum chamber arranged so that it can be raised and lowered vertically and also moved horizontally; said vacuum chamber capable of being secured when situated on a filler opening of said lower press;
- mixing troughs of said preliminary press and said lower press composed of second housing elements; said second housing elements being adapted to fit the contour of receiving spaces of said preliminary press and said lower press and to fit the screw presses of said preliminary press or said lower press; and said second housing elements being pivotally attached to the press frame.
- FIG. 1 shows a partial top plan view of the vacuum press.
- FIG. 2 shows section A--A of FIG. 1.
- FIG. 3 shows a partial sectional view through the sieve plate holder looking upward.
- FIG. 4 shows the vacuum chamber moved to its cleaning position, thereby revealing the feed opening to the lower press.
- the vacuum press of the invention is comprised of a preliminary press or upper press or mixer, a lower press and a vacuum chamber.
- the vacuum press has pivot housing elements which are in turn pivotally attached to the press frame.
- the horizontally hinged housing elements, such as cylinder halves, of the preliminary press are preferably connected by way of a flange connection to a sieve plate holderwhich is likewise arranged on a U-shaped support of the press frame so thatit is pivotally movable horizontally. Other means of attachment are possible.
- a joint washer Arranged displaceably at the other end of the vacuum press is a joint washer with radial and lateral sealing means.
- the vacuum chamber which can be raised and lowered vertically, and which can be pivoted horizontally, is releasably connected to the joint washer preferably by snap closure means. Pivotal movement of the vacuum chamber is ensured by ahinge connection to the U-shaped support. Other means for attachment can beused.
- the vacuum chamber is placed upon the filler opening of the lower press, and is secured preferably by means of snap closure means.
- Mixing troughs of the preliminary press and the lower press are each formed by housing elements, preferably, two in number.
- the inner wall of the housing elements are adapted to suit or fit the contour of the receiving spaces and of the screw presses.
- the housing elements are radially pivotally connected to the press frame preferably by way of vertically displaceable supports.
- FIG. 1 illustrates the vacuum press according to the invention, wherein for the sake of simplicity, the lower press has not been shown.
- the cylinder of the upper press 20 is divided vertically into two cylinder halves 5.
- a hinge 2 which forms the connection between the cylinder halves 5 and the press frame makes it possible for the cylinder halves 5 to pivot horizontally. Broken lines areused to illustrate the cleaning position of the cylinder halves 5.
- flange parts 4 which are connected to the flange ring 8 of the sieve plate holder 3 by way of knownsnap closure means.
- the sieve plate holder 3 is, in turn, also pivotable horizontally, and it is connected to a U-shaped support 7 of the press frame by a hinge 16. An appropriate arrow is used to show the direction ofpivotal movement.
- the sieve plate holder 3 which is shown by broken lines is in the cleaning position.
- a joint washer 6 is pushed onto the side of the sieve plate holder 3 which is remote from the flange ring 8.
- FIG. 2 shows the design of the housing elements 9 and 9' in the region of the receiving spaces 10 which assist in feeding the mass into the screw 17of the preliminary press.
- the housing elements 9, 9' enclose the contour ofthe receiving spaces 10 and screw 17 and they form the mixing trough. Beneath their longitudinal side, the housing elements 9 are joined at a hinge connection 18 to a horizontally displaceable holder 11, which, in turn, is mounted in a guide tube 19 which is fixed to the press frame.
- Thehousing element 9 is shown in the cleaning position in FIG. 2.
- the lower press is also provided with appropriate housing elements 9 and 9'. All the pivotally movable press parts can be secured in their operative positions by known snap closure means.
- the joint washer 6 has a radial sealing element 12, and a second sealing element 13 on the end of the joint washer 6 ensures that the vacuum chamber 1 is sealed at the end.
- the vacuum chamber can be connected to the joint washer 6 by means of a snap closure means 14.
- the vacuum chamber 1 is, in turn, designed so that it can be raised and lowered vertically, and an eccentric, not shown, is provided for that purpose.
- the capacity of the vacuum chamber 1 to move vertically makes it possible to prevent damage to the seal arranged on the lower side of the vacuum chamber 1 when the vacuum chamber 1 is being placed on or removed from the feed opening of the lower press (not shown).
- the vacuum chamber 1 has hinges 16 for horizontal pivotal movement, these hinges likewise being connected to the U-shaped support 7.
- the vacuum chamber 1 is now in its cleaning position, after having first been raised by the eccentric (now shown) and horizontally pivotally moved via hinges 16.
- the vacuum chamber is raised from the feed opening of the lower press 21, thereby preventing damage to the seal as the vacuum chamber is moved to its cleaning position.
- the snap closure means 14 is released in order to completely disconnect thevacuum chamber 1 from the joint washer 6.
- the connection between the vacuumchamber 1 and the filler opening of the lower press also has to be released.
- the snap closure means of the flange ring 8 of the sieve plate holder 3 and the flange parts 4 of the cylinder halves 5 are then disengaged, and the sieve plate holder 3 can be pivoted out. After the connecting screws of the cylinder halves 5 have been loosened, the cylinder halves can be opened into the position for cleaning.
- the snap closure means and the housing elements 9 and 9' forming the mixingtrough also have to be released, and then they have to be removed horizontally by means of the holder 11, and pivoted out radially by means of the hinge connection 18. Similarly, the housing elements of the lower press have to be brought into the cleaning position.
- the housing parts, sieve plate holder and vacuum chamber are brought into the operative position and secured there in a similar way, but by proceeding in reverse order.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Press Drives And Press Lines (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Cleaning In General (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4108342 | 1991-03-14 | ||
DE4108342A DE4108342C2 (de) | 1991-03-14 | 1991-03-14 | Vakuumpresse, insbesondere für keramische Massen |
Publications (1)
Publication Number | Publication Date |
---|---|
US5299927A true US5299927A (en) | 1994-04-05 |
Family
ID=6427316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/851,483 Expired - Fee Related US5299927A (en) | 1991-03-14 | 1992-03-13 | Vacuum press for continuous production of plastic extruded masses |
Country Status (9)
Country | Link |
---|---|
US (1) | US5299927A (fr) |
EP (1) | EP0503335B1 (fr) |
JP (1) | JPH05212712A (fr) |
CN (1) | CN1028157C (fr) |
BR (1) | BR9200847A (fr) |
CZ (1) | CZ281928B6 (fr) |
DE (2) | DE4108342C2 (fr) |
ES (1) | ES2046902T3 (fr) |
RU (1) | RU2041062C1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2375071A (en) * | 2001-04-03 | 2002-11-06 | William Roy Powel | Extrusion die (slipper) adjustment mechanism |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103419273B (zh) * | 2012-05-22 | 2015-09-23 | 青岛青锻锻压机械有限公司 | 电动螺旋压砖机 |
CN104289472A (zh) * | 2014-07-31 | 2015-01-21 | 广西北流仲礼瓷业有限公司 | 一种用于陶瓷制造的除尘器 |
EP3271125B1 (fr) * | 2015-03-20 | 2023-11-08 | Siti - B&T Group S.p.A. | Groupe de panneaux d'extrémité d'une presse pour produits en céramique et autres |
CN106292731B (zh) * | 2015-06-08 | 2019-02-15 | 佛山市恒力泰机械有限公司 | 一种上模与下模夹持粉料同步下降的填料方法 |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1356691A (en) * | 1919-01-16 | 1920-10-26 | Farrel Foundry | Rubber-mixer |
US2257695A (en) * | 1939-03-23 | 1941-09-30 | Lihotzky Emil | Worm press for the manufacture of alimentary pastes |
GB765383A (en) * | 1954-03-01 | 1957-01-09 | Farrel Birmingham Co | Apparatus for extruding plastic material |
US2918714A (en) * | 1957-03-22 | 1959-12-29 | Garvey James | Split plodder nozzles |
US3304579A (en) * | 1965-03-30 | 1967-02-21 | Jr Thomas Ashworth | Dual hinged side delivery head for extruders |
US3561371A (en) * | 1969-04-10 | 1971-02-09 | Ralston Purina Co | Extruder door |
US3574891A (en) * | 1968-08-19 | 1971-04-13 | French Oil Mill Machinery | Mechanical screw press |
SU514708A1 (ru) * | 1974-12-08 | 1976-05-25 | Проектно-конструкторское бюро по проектированию оборудования для производства пластических масс и синтетических смол | Устройство дл смешивани пластичных материалов |
US4028027A (en) * | 1974-05-16 | 1977-06-07 | Werner & Pfleiderer | Screw housing for a screw machine |
US4089510A (en) * | 1975-10-01 | 1978-05-16 | Societe Nationale Des Poudres Et Explosifs | Screw extruder |
US4234298A (en) * | 1977-06-15 | 1980-11-18 | Hermann Berstorff Maschinenbau Gmbh | Apparatus for removing a cylinder from a screw extruder |
JPS56113A (en) * | 1979-06-15 | 1981-01-06 | Matsushita Electric Works Ltd | Kneader casing |
US4385876A (en) * | 1978-05-31 | 1983-05-31 | Baker Perkins Inc. | Split wear liner for twin bore barrel assembly |
US4986745A (en) * | 1987-01-05 | 1991-01-22 | Kabushiki Kaisha Kobe Seiko Sho | Roller head opening and closing apparatus in roller head extruder |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE678466C (de) * | 1936-10-02 | 1939-07-15 | Gudrun Welzel Geb Philipp | Schneckenpresse mit Aufbereitung und Zufuehrung der keramischen Masse in geschnitzelter Form |
GB607076A (en) * | 1946-01-25 | 1948-08-25 | Charles Leslie Willis | Improvements in and relating to machines for de-airing plastic materials |
DE1216171B (de) * | 1963-07-20 | 1966-05-05 | Soest Ferrum Appbau G M B H | Schneckenpresse zum Verpressen von Steinzeugmassen od. dgl. |
DE1805868A1 (de) * | 1968-10-29 | 1970-05-27 | Krone Kg | Strangpresse |
NL6818261A (fr) * | 1968-12-19 | 1970-06-23 |
-
1991
- 1991-03-14 DE DE4108342A patent/DE4108342C2/de not_active Expired - Fee Related
-
1992
- 1992-02-22 ES ES199292102992T patent/ES2046902T3/es not_active Expired - Lifetime
- 1992-02-22 DE DE92102992T patent/DE59200030D1/de not_active Expired - Fee Related
- 1992-02-22 EP EP92102992A patent/EP0503335B1/fr not_active Expired - Lifetime
- 1992-03-09 CN CN92101569A patent/CN1028157C/zh not_active Expired - Fee Related
- 1992-03-11 JP JP4052515A patent/JPH05212712A/ja active Pending
- 1992-03-12 BR BR929200847A patent/BR9200847A/pt not_active IP Right Cessation
- 1992-03-12 CZ CS92748A patent/CZ281928B6/cs unknown
- 1992-03-13 US US07/851,483 patent/US5299927A/en not_active Expired - Fee Related
- 1992-03-13 RU SU925011053A patent/RU2041062C1/ru active
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1356691A (en) * | 1919-01-16 | 1920-10-26 | Farrel Foundry | Rubber-mixer |
US2257695A (en) * | 1939-03-23 | 1941-09-30 | Lihotzky Emil | Worm press for the manufacture of alimentary pastes |
GB765383A (en) * | 1954-03-01 | 1957-01-09 | Farrel Birmingham Co | Apparatus for extruding plastic material |
US2918714A (en) * | 1957-03-22 | 1959-12-29 | Garvey James | Split plodder nozzles |
US3304579A (en) * | 1965-03-30 | 1967-02-21 | Jr Thomas Ashworth | Dual hinged side delivery head for extruders |
US3574891A (en) * | 1968-08-19 | 1971-04-13 | French Oil Mill Machinery | Mechanical screw press |
US3561371A (en) * | 1969-04-10 | 1971-02-09 | Ralston Purina Co | Extruder door |
US4028027A (en) * | 1974-05-16 | 1977-06-07 | Werner & Pfleiderer | Screw housing for a screw machine |
SU514708A1 (ru) * | 1974-12-08 | 1976-05-25 | Проектно-конструкторское бюро по проектированию оборудования для производства пластических масс и синтетических смол | Устройство дл смешивани пластичных материалов |
US4089510A (en) * | 1975-10-01 | 1978-05-16 | Societe Nationale Des Poudres Et Explosifs | Screw extruder |
US4234298A (en) * | 1977-06-15 | 1980-11-18 | Hermann Berstorff Maschinenbau Gmbh | Apparatus for removing a cylinder from a screw extruder |
US4385876A (en) * | 1978-05-31 | 1983-05-31 | Baker Perkins Inc. | Split wear liner for twin bore barrel assembly |
JPS56113A (en) * | 1979-06-15 | 1981-01-06 | Matsushita Electric Works Ltd | Kneader casing |
US4986745A (en) * | 1987-01-05 | 1991-01-22 | Kabushiki Kaisha Kobe Seiko Sho | Roller head opening and closing apparatus in roller head extruder |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2375071A (en) * | 2001-04-03 | 2002-11-06 | William Roy Powel | Extrusion die (slipper) adjustment mechanism |
GB2375071B (en) * | 2001-04-03 | 2004-09-15 | William Roy Powel | Extrusion die(slipper)adjustment mechanism |
Also Published As
Publication number | Publication date |
---|---|
CS74892A3 (en) | 1992-09-16 |
CN1028157C (zh) | 1995-04-12 |
ES2046902T3 (es) | 1994-02-01 |
DE4108342C2 (de) | 1994-01-13 |
DE59200030D1 (de) | 1994-01-20 |
CN1064642A (zh) | 1992-09-23 |
JPH05212712A (ja) | 1993-08-24 |
DE4108342A1 (de) | 1992-09-24 |
CZ281928B6 (cs) | 1997-04-16 |
EP0503335A1 (fr) | 1992-09-16 |
EP0503335B1 (fr) | 1993-12-08 |
RU2041062C1 (ru) | 1995-08-09 |
BR9200847A (pt) | 1992-11-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: KEMA-KERAMIKMASCHINENBAU GMBH GORLITZ, A CORP. OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:STEFFENS, EBERHARD;KUNZE, WOLFRAM;LORENZ, KLAUS;AND OTHERS;REEL/FRAME:006101/0867 Effective date: 19920429 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
LAPS | Lapse for failure to pay maintenance fees | ||
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 19980405 |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |